Crash in FNetGUIDCache::GetObjectFromNetGUID()

UE - Networking - Jun 28, 2016

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Error message: Assertion failed: Package->IsFullyLoaded() [Link Removed] [Line: 2296] Source ...

Content is Missing from Cook and indeterminism: StaticMeshComponents in Blueprints that copy data into themselves from StaticMesh have indeterminism due to StaticMesh not yet finished loading, postloading, or building

UE - Foundation - Nov 12, 2025

Content is Missing from Cook warnings are warnings reported at the end of cook phase of a project's data build. They report that data used by a cooked package will not be available at runtime. This ...

Crash occurs if the Recast Navmesh is set to Dynamic and the BehaviorTree runs a 'Does Path Exist' decorator

UE - AI - Jun 16, 2015

Crash occurs if the Recast Navmesh is set to Dynamic and the BehaviorTree runs a 'Does Path Exist' decorator. Crashreporter info: [Link Removed] ...

[CrashReport] UE4Editor_UnrealEd!EditorLevelUtils::SetLevelVisibility() [editorlevelutils.cpp:748]

Tools - Aug 16, 2016

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Assertion failed: Level->bIsVisibl ...

Crash in FStreamingTextureLevelContext::GetBuildDataIndexRef

UE - Graphics Features - Feb 20, 2017

Error message: Assertion failed: BoundState.Texture == nullptr || BoundState.Texture == Texture2D [Link Removed] [Line: 371] Source Context: 358 if (LevelIndex) // If the index is found ...

[CrashReport] UE4Editor_AssetRegistry!FAssetRegistry::GetSubClasses() [assetregistry.cpp:2803]

UE - Gameplay - Blueprint - Jan 31, 2017

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Access violation - code c0000005 ( ...

[CrashReport] UE4Editor_CoreUObject!FLinkerSave::FLinkerSave() [linkersave.cpp:31]

UE - Foundation - Core - Aug 22, 2017

This is a longstanding and common crash that has occurred since at least the 4.11 release. The error appears to occur while trying to access a .tmp file. User DescriptionsI left unreal unattended ...

Look at Android GetTimeStamp local file handling

UE - Platform - Mobile - May 29, 2020

Only files in UFS or NonUFS manifest that are local are returning a non-minvalue timestamp.  While this is expected it is causing issues with logging file handling. See: https://udn.unrealengine.co ...

[CrashReport] UE4Editor_Core!FWindowsWindow::Initialize() [windowswindow.cpp:199]

Tools - Mar 1, 2017

Error message: Assertion failed: 0 [Link Removed] [Line: 199] Window Creation Failed (1158) Source Context: 184 VirtualHeight = ClientHeight; 185 186 // We call reshape w ...

Switch on custom enum causes compilation errors after Hot Reload

UE - Foundation - Core - Sep 28, 2015

If the project is hot reloaded while a Switch on Enum is inside of a blueprint which is switching on a custom enum, the switch will become corrupted. It changes the 'selection' pin to take a Byte pa ...